Refuse-burner.



H. IVIlDDAUGH.

REFUSE BURNER.

APPLlcATloN FILED MARzQ, 191s.

1,199,403.. lzltentvdupt. 26, 1916.

f ]-f E' HORACE' MIDDAUQH, on SEATTLE, WASHINGTON.

Y REFUSE-BURNER.'

To all whom i1? may concern:

Be it known that I, HORACE MIDDAUGH, a citizen of the United States, andresident of the city of Seattle,county of King, State of Washington,have invented certain new and useful Improvements in Refuse-Burners, of

l which the following is a specification.

My invention relates to refuse burners, and has been particularlydesigned for use in disposing of the refuse from saw mills.

The object of my invention is to provide a simple and cheap form ofconstruction,`

which shall have a. large capacity, and involving in its constructionsuch' principles as contribute to the efficiencyv of the device inaction, and its' longevity.

The scope of my invention may be deter- `mined byan inspection'of theclaims ter- `minating this specification. In the accompanying drawings Ihave shown the form of construction, which is now preferred by me.

Figure l is anv elevation and partial section of a device constructed inaccordance' 'Y with my invention. Fig.` 2 is a partial plan f 25 view, aportion of this having the outer skin broken away, to better show .thegrates within.

The general shape of the device chosen isv that of a cone. This formgives a large base, whereby the pile of refuse may be of considerablesize, without the same being brought into actual contact with the outerskin. By reasonl of this, excessive heating of this outer skin, and inconsequence wastage thereof,'and deterioration, is in a meassureprevented. The material of Aconstruction is preferably iron. This wouldinvolve struts or inclined vertical posts 1, to the inner side of whichis secured plates to form the inner skin 2, and to the outer sides ofwhich are secured skin 3.

The inner skin 2 is imperforate, except as it is necessary to provide anopening, as 20, through which the refuse is fed. The outer skin 3 isprovided with an opening 30, said opening consisting in effect of aspace extending entirely about the bottom of the burner, through whichthe air will have free access to the space between the two skins.

A t the upper'end of the cone the space between the two skins is leftfreely open, whereby air will enter through the opening 3 at the base,pass upwardly between the two skins, and be discharged at the upper endof the wall. This produces a circulation of Speciicationof Lettersatent. Patent Application med March 29,1916. seri-uno. 87,616.

hood 4, this hood being thispurpose through la I. which extend to andbeyond the base 'ofthe pile.

plates to form the outer' cooling air, which prevents excessiveheating.'-

of the plates, and thereby 'contributesto their longevity. Y y At theupper end of the .cone isa screening struction. This hood is ed sept.26, i916.

of any suitablefc'onpreferably made at i its base of asize to itiiponthe outer skin i 3, whereby the discharge of cooling air from v thespace between the two skins is made diy rectly into'the base of thehood. A

A The air for combustion is supplied through.v I

a grate, or grates 5, which occupy a considerable space, coveringthe'central portion of Air is provided for tunnel, ortunnels 6,'

thebase of the cone.

cone. It is my'intention to provide all ofl these grates.

ity, because of the fact that it will accommodate a vlarge sized'pile,and by reason of the air circulating between the two skins, theoverheating of the plates forming the walls is prevented.v At nishing ofair for combustion through the base of the pile, causes a more rapidAand effective combustion than when the air is sim- `the .air forcombustion purposes through '7 I l 75 This. form of construction is onewhich is' cheap in first cost, has'a considerable capacthe same time,fury ply provided to the outside surface of the WhatIclaim as myinvention is:

l, vA refuse burner comprising a base having 'a grate comprising the ycentral area thereof, and channels for -supplying air to saidgrate,upwardly-*extending struts having their lower ends carried by the basewell outward of the gratearea and inclined to outline a frustum of acone, a casing secured upon the outer side of said struts, a secondcasing secured to the inner side of said struts and. forming with thefirst casing a hollow wall,

an opening extending entirely about the base thereof to admit outsideair to the hollow wall but not to the combustion chamber, said wallhaving a refuse feeding opening near its top.j

2. A refuse burner comprising a base having a grate comprising thecentral area thereof, and channels for supplying air to saidgrate,-upwardly-extending struts having their lower ends carried by thebase well outward of the grate area and inclined to outline a frustum ofa cone, a casing secured upon the outer side of said Struts and eX-Ysaid hollow wall having 10o tending from the top to a point above thebase, a second casing secured to the inner side of said struts andextending from the top to the base and forming, with said first casing,a hollow wall open at the top and open to the outer air at the bottom.

3. A refuse burner comprising a base, upwardly-extending struts, acasing secured upon the outer side of said struts and extending from thetop to a point above the base, a second casing secured to the inner sideof said struts, and extending from the top to the base, and forming withsaid first casing a hollow wall open at the top, and open to the outerair at the bottom, and a screening hood secured to the tops of saidstruts and sur- 'rounding the upper outlet of said hollow wall, wherebythe air therefrom is discharged withinrthe hood.

4. A refuse burner comprising a base having draft channels therein,upwardly extending struts mounted thereon, an outer casing secured uponthe outer side of said struts and extending from the top thereof to nearthe base, an inner casing secured upon the inner side of said struts andextending continuously from their top to the base, -said casings forminga hollow wall vhaving an inlet opening for outside air at HORACEMIDDAUGH.

